Benchmark: find vs includes é

Script Preparation code:

var array = ['banana', 'sausage', 'jesus', "aze", "akld,kazjenjkaznejkazjejkazjekazejkazejkazejkjandjz"]

Tests:

a
array.find(f => f == 'akld,kazjenjkaznejkazjejkazjekazejkazejkazejkjandjz' );
b
array.includes('akld,kazjenjkaznejkazjejkazjekazejkazejkazejkjandjz');

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
a
b

Fastest: N/A

Slowest: N/A

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Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):

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Let's dive into the provided JSON benchmark definition and explain what's being tested, compared, and their pros and cons.

**Benchmark Definition**

The provided JSON defines two test cases for comparing the performance of `Array.find()` and `Array.includes()` methods in JavaScript. The script preparation code is a sample array containing multiple strings, including some non-ASCII characters (é). There are no HTML preparation codes, indicating that only JavaScript execution time is being measured.

**Options Compared**

Two approaches are compared:

1. **`array.find(f => f == 'akld,kazjenjkaznejkazjejkazejkazejkazejkjandjz')`**: This method returns the first element in the array that satisfies the provided condition (`f => f == ...`). In this case, it's searching for a specific string within the array.
2. **`array.includes('akld,kazjenjkaznejkazjejkazejkazejkazejkjandjz')`**: This method checks if the specified value is present in the array.

**Pros and Cons of Each Approach**

1. **`array.find()`**:
	* Pros: Can be more efficient for certain use cases, as it only iterates over elements until finding a match.
	* Cons: May not be faster for large arrays or when searching for an element that doesn't exist, resulting in a default value being returned (e.g., `undefined`).
2. **`array.includes()`**:
	* Pros: Faster and more efficient than `array.find()` for large arrays and when searching for an existing element.
	* Cons: Iterates over the entire array, which can be slower for small or sparse arrays.

**Library Usage**

There is no explicit library usage in the provided benchmark definition. However, it's worth noting that some JavaScript engines (like V8) provide built-in optimizations for certain methods, such as `includes()`.

**Special JS Feature/ Syntax**

The benchmark defines a sample array with non-ASCII characters (`é`). This might be useful to test the handling of Unicode strings in JavaScript engines. However, without further context or test cases, it's difficult to assess its significance.

**Other Alternatives**

To measure the performance of `Array.find()` and `array.includes()`, alternative approaches could include:

1. Searching for a specific value within an array using `for...in` loops.
2. Using `indexOf()` method instead of `includes()`.
3. Measuring the time taken by each method to find a subset of elements in the array that match a certain condition.

For a more comprehensive benchmark, you might also consider testing other methods, such as:

1. `Array.prototype.reduce()` or `Array.prototype.some()` for filtering and iteration.
2. Using Web Workers or parallel processing to compare execution times on different devices or browsers.

Keep in mind that the choice of alternative approaches depends on your specific goals, target JavaScript engine, and performance requirements.

Related benchmarks:

find vs includes é (version: 0)

Comparing performance of: a vs b

Created: 5 years ago by: Guest

Jump to the latest result

a

b

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):